S
M
T
W
T
F
S
28
93°
71°
29
94°
73°
30
94°
74°
1
95°
72°
2
95°
71°
3
94°
74°
4
95°
75°
5
92°
72°
6
88°
71°
7
89°
72°
8
90°
71°
9
88°
72°
10
87°
72°
11
89°
71°
12
91°
72°
13
90°
71°
14
93°
72°
15
91°
73°
16
89°
72°
17
89°
74°
18
91°
72°
19
91°
74°
20
89°
74°
21
90°
73°
22
91°
75°
23
93°
75°
24
94°
74°
25
93°
75°
26
89°
75°
27
90°
74°
28
90°
75°
29
93°
73°
30
89°
74°
31
89°
74°
1
90°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Boston
Boston's July 2026 forecast shows daily high temperatures ranging from 87° to 95°, with overnight lows between 71° and 75°. The average high for July is 91° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Boston. See also: August | September | October.